112 CALIFORNIA ACADEMY OF SCIENCES. 



characters have great weight in the order. — Common at 

 low elevations of the Sierra de la Laguna. 



7. Caruamine Palmeri Watson. Collected b}^ Dr. 

 Palmer at La Paz. 



8. Lyrocarpa Xanti Brandegee. — Throughout the 

 whole Cape Region at low elevations. 



9. Lp:pidium nitidum Nutt. Sierra de San Francis- 

 quito. 



10. Lepidium Virginicum L. Sierra de San Fran- 

 cisquito. 



11. Atamisquea emarginata Miers. Not so abun- 

 dant as in the region about San Gregorio. 



Some specimens have recently been received from Dr. 

 F. Kurtz, Cordoba, Argentine Republic. He writes: 

 "I enclose two specimens of our Atamisquea — the most 

 detestable shrub I know — brittle like glass and ill -smell- 

 ing." The differences in floral structure noted in Proc. 

 Cal. Acad., ser. 2, ii, 128, may to some appear sufficient 

 to justify the separation of the North American forms as 

 a variety or even a distinct species. 



12. Cleome (Piiysostemon) ephemera. — Annual, 

 glabrous, erect, branching from the base, 2-3 dm. 

 high; leaves simple, linear, acuminate, 2-3 cm. long; 

 flowers solitary from the upper axils, yellow, 5 mm. long; 

 petals oval, tapering to the base, crenate-dentate, twice 

 longer than the linear-lanceolate sepals; stamens 8, four 

 perfect, four with golden yellow inflations below the sterile 

 anthers; ovarv very shortly stipitate, 20-ovuled ; style 

 short, stigma capitate; capsule 2 mm. wide, 2-25^ cm', 

 long, on a filiform pedicel of nearly the same length; 

 seeds muricate. 



Very abundant about San Jose del Cabo during the 

 rainy season and soon disappearing when the soil becomes 

 dry." 



